#include "chan_kern.h"
#include "irq_kern.h"
#include "irq_user.h"
+#include "kern_util.h"
#include "os.h"
#define LINE_BUFSIZE 4096
n = line->head - line->tail;
if (n <= 0)
- n = LINE_BUFSIZE + n; /* The other case */
+ n += LINE_BUFSIZE; /* The other case */
return n - 1;
}
unsigned long flags;
int room;
- if (tty->stopped)
- return 0;
-
spin_lock_irqsave(&line->lock, flags);
room = write_room(line);
spin_unlock_irqrestore(&line->lock, flags);
- /*XXX: Warning to remove */
- if (0 == room)
- printk(KERN_DEBUG "%s: %s: no room left in buffer\n",
- __FUNCTION__,tty->name);
return room;
}
int ret;
spin_lock_irqsave(&line->lock, flags);
-
- /*write_room subtracts 1 for the needed NULL, so we readd it.*/
+ /* write_room subtracts 1 for the needed NULL, so we readd it.*/
ret = LINE_BUFSIZE - (write_room(line) + 1);
spin_unlock_irqrestore(&line->lock, flags);
unsigned long flags;
int err;
- /*XXX: copied from line_write, verify if it is correct!*/
- if (tty->stopped)
- return;
-
spin_lock_irqsave(&line->lock, flags);
err = flush_buffer(line);
spin_unlock_irqrestore(&line->lock, flags);
line_flush_buffer(tty);
}
-void line_put_char(struct tty_struct *tty, unsigned char ch)
+int line_put_char(struct tty_struct *tty, unsigned char ch)
{
- line_write(tty, &ch, sizeof(ch));
+ return line_write(tty, &ch, sizeof(ch));
}
int line_write(struct tty_struct *tty, const unsigned char *buf, int len)
unsigned long flags;
int n, ret = 0;
- if (tty->stopped)
- return 0;
-
spin_lock_irqsave(&line->lock, flags);
if (line->head != line->tail)
ret = buffer_data(line, buf, len);
break;
if (i == ARRAY_SIZE(tty_ioctls)) {
printk(KERN_ERR "%s: %s: unknown ioctl: 0x%x\n",
- __FUNCTION__, tty->name, cmd);
+ __func__, tty->name, cmd);
}
ret = -ENOIOCTLCMD;
break;
tty = winch->tty;
if (tty != NULL) {
line = tty->driver_data;
- chan_window_size(&line->chan_list, &tty->winsize.ws_row,
- &tty->winsize.ws_col);
- kill_pgrp(tty->pgrp, SIGWINCH, 1);
+ if (line != NULL) {
+ chan_window_size(&line->chan_list, &tty->winsize.ws_row,
+ &tty->winsize.ws_col);
+ kill_pgrp(tty->pgrp, SIGWINCH, 1);
+ }
}
out:
if (winch->fd != -1)